Extra strong rim strips for 29" mountain bikes and 28" trekking bikes. Made from durable nylon. Provides a secure fit on the rim due to its elastic properties. Features a cut-out for the valve. Available in packs of two. Sizes: 28” x 18 mm (18 - 622) 28” x 22 mm (22 - 622) 28” x 25 mm (25 - 622).